A server backflow prevention device and a backflow prevention method

Abstract

The application discloses a server backflow prevention device and a backflow prevention method, and relates to the technical field of server heat dissipation. The server backflow prevention device comprises a cabinet, a case, a fixed cover, a movable cover and a lifting device. The lifting end of the lifting device can move through the penetrating part to extend out of or retract into the inner cavity of the case. When the lifting end extends out of the case by penetrating through the penetrating part, the lifting end can make the movable cover rotate to block the backflow gap between two adjacent cases. When the movable cover blocks the backflow gap, the lifting end can keep the sealing between the backflow gap and the inner cavity of the case to avoid air leakage and the influence on the cooling operation in the case, thereby guaranteeing the reliable and effective heat dissipation of the server.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of server heat dissipation, and in particular to a server backflow prevention device and a backflow prevention method. BACKGROUND

[0002] In a data center, servers are orderly placed in cabinets for cooperative operation. In order to ensure the stable operation of the servers, the front window of the cabinet is constructed to form a closed cold aisle, and an air conditioning system is mounted to provide cooling air flow; the rear window of the cabinet forms a closed hot aisle, and an exhaust fan is mounted to be able to take out the high-temperature air flow emitted by the servers.

[0003] In actual application scenarios, due to the insufficient refrigeration efficiency of the air conditioning system of the data center, the hot air in the hot aisle cannot be timely taken out, the air pressure balance between the cold aisle and the hot aisle is broken, and the air pressure difference is significantly increased. At this time, the hot air discharged by the servers will flow back to the front window area in a reverse direction along the gap between the servers, causing the temperature of the internal components of the servers to rise and affecting the operation stability of the entire system.

[0004] In summary, how to prevent the backflow of hot air from the rear window of the server to the front window is a technical problem to be solved by those skilled in the art. SUMMARY

[0005] The present application provides a server backflow prevention device to at least solve the problem that the hot air discharged by the server flows back to the front window area in a reverse direction along the gap between the servers in the related art. The present application also provides a backflow prevention method applied to the above-mentioned server backflow prevention device.

[0006] The present application provides a server backflow prevention device, comprising:

[0007] a cabinet;

[0008] a cabinet, at least two cabinets are arranged in the cabinet, and a backflow gap is formed between adjacent two cabinets;

[0009] a fixed cover arranged at the top of the cabinet, the fixed cover comprising a body and a through portion arranged on the body, the through portion being used for the lifting end to pass through and being capable of maintaining the sealing between the backflow gap and the inner cavity of the cabinet;

[0010] a movable cover rotationally connected to the fixed cover or the cabinet;

[0011] a lifting device arranged in the front window area of the cabinet and comprising a lifting end, the lifting end being capable of moving through the through portion to extend out of or retract into the inner cavity of the cabinet;

[0012] When the lifting end passes through the through portion to extend out of the cabinet, the lifting end can drive the movable cover to rotate to block the backflow gap.

[0013] The application also provides a backflow prevention method applied to the server backflow prevention device, the backflow prevention method comprising the following steps of: acquiring a first air pressure value P1 of a cooling system and a second air pressure value P2 of a rear window area of a case; determining a difference value ΔP=P1-P2 of the first air pressure value P1 and the second air pressure value P2;

[0014] When the ΔP≤0, a set temperature T1 of the cooling system and an actual temperature T2 of a front window area of the case are acquired, a difference value ΔT=T1-T2 of the set temperature T1 and the actual temperature T2 is determined, and when the ΔT≤5℃, a first control instruction for controlling the lifting device to work is formed, so as to control the lifting device to drive the movable cover to rotate to block the backflow gap;

[0015] When the ΔP>0, a second control instruction for controlling the lifting device to work is formed, so as to control the lifting device to drive the movable cover to rotate to open the backflow gap.

[0016] In the application, the lifting end of the lifting device can move through the penetrating part to extend out of or retract into the inner cavity of the case, so that when it is necessary to block the backflow gap, the lifting end can move through the penetrating part and extend out of the case to drive the movable cover to rotate to block the backflow gap. In this process, the lifting end moves through the penetrating part, but the penetrating part can maintain the sealing between the backflow gap and the inner cavity of the case, so that the backflow gas can be prevented from entering the case, the cooling channel in the case is prevented from being interfered, and the reliable and effective heat dissipation of the server is ensured. When it is not necessary to block the backflow gap, the lifting end of the lifting device moves through the penetrating part and retracts into the case, the fixed cover is arranged on the top of the case and can ensure that the airflow of the cooling channel in the case cannot flow out, so that the reliable flow of the cooling channel in the case is ensured, and the reliable heat dissipation is ensured.

[0017] The application has the beneficial effects that: through the movement of the lifting end of the lifting device arranged in the front window area of the case, the movable cover is driven to rotate to block the backflow gap, and the damage of the hot air backflow to the server is avoided; the penetrating part maintains the sealing between the inner cavity of the case and the backflow gap, the air leakage of the cooling channel in the case is avoided, the reliable heat dissipation is ensured, and the stability of the server operation is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the application, the drawings needed in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 The structural schematic diagram of the server backflow prevention device provided by the application;

[0020] Figure 2The schematic diagram of the lifting device in the raised state of the movable cover of the present application;

[0021] Figure 3 The schematic diagram of the structure of the fixed cover of the present application;

[0022] Figure 4 The partial enlarged view of Figure 3 ;

[0023] Figure 5 The schematic diagram of the lifting device in the lowered state of the movable cover of the present application;

[0024] Figure 6 The side view of Figure 5 ;

[0025] Figure 7 The schematic diagram of the lifting device in the raised state of the movable cover of the present application;

[0026] Figure 8 The side view of Figure 7 ;

[0027] Figure 9 The schematic diagram of the structure of the control board of the present application;

[0028] Figure 10 The schematic diagram of the backflow prevention method of the present application.

[0029] Among them, the above-mentioned drawings include the following reference signs:

[0030] 01-front window area; 02-rear window area; 03-first edge; 04-second edge;

[0031] 1-cabinet; 2-movable cover; 3-machine box; 4-backflow gap; 5-lifting device; 6-fixed cover; 7-control board; 8-detection element;

[0032] 31-through hole; 32-fixing stud; 51-driving assembly; 52-linkage assembly; 61-penetration part; 62-body; 63-rotation shaft; 64-groove; 71-first power supply interface; 72-first signal interface; 73-second signal interface; 74-external data interface; 75-second power supply interface; 76-temperature sensor; 77-controller;

[0033] 511-motor; 512-output gear; 513-output end; 521-first linkage; 522-second linkage; 523-sliding block; 524-fixed rail; 525-handle; 526-first rotation shaft; 527-second rotation shaft; 528-third rotation shaft; 529-guide; 611-penetration hole; 612-elastic sheet;

[0034] 5111 - power interface; 5112 - communication interface; 5221 - first part; 5222 - second part; 5223 - roller; 5231 - engaging portion; 5241 - limiting protrusion; 5251 - connecting portion; 5252 - gripping portion; 5291 - sliding groove. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be apparently and completely described below with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present application.

[0036] It should be noted that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or communication between two elements. The terms "parallel", "perpendicular", "equal" include the described cases and the approximately similar cases to the described cases, and the approximately similar cases are within the acceptable deviation range, wherein the acceptable deviation range is determined by the ordinary skill in the art considering the measurement being discussed and the error related to the measurement of the specific quantity (i.e. the limitation of the measurement system). For example, "parallel" includes absolute parallel and approximate parallel, wherein the acceptable deviation range of approximate parallel can be, for example, within 5°; "perpendicular" includes absolute perpendicular and approximate perpendicular, wherein the acceptable deviation range of approximate perpendicular can also be, for example, within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality can be, for example, that the difference between the two equalities is less than or equal to 5% of either one. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0037] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with the drawings and specific embodiments.

[0038] The server backflow prevention device provided by the application comprises a cabinet 1, a machine box 3, a fixed cover 6, a movable cover 2 and a lifting device 5. Please refer to Figure 1 .

[0039] A plurality of machine boxes 3 are arranged in the cabinet 1, one machine box 3 corresponds to one server, and a backflow gap 4 is formed between two adjacent machine boxes 3. The backflow in the backflow gap 4 here can be gas backflow or liquid backflow.

[0040] In one embodiment, the server is cooled by air cooling, and hot air of the server is sent to the rear window area 02 and discharged to take away heat by air cooling. In this case, if the air pressure balance between the cold and hot channels is broken, the discharged hot air will flow back to the front window area 01 through the backflow gap 4.

[0041] In another embodiment, the server is an immersion liquid cooling server, and the coolant is directly guided to the heat source to take away heat by liquid cooling. In this way, the coolant is reliably cooled from the front window area 01 to the rear window area 02. During this process, since the air pressure balance between the cold and hot channels is broken, the coolant will also flow from the backflow gap 4 to the front window area 01.

[0042] Based on the above two embodiments, the backflow gap 4 is blocked by the cooperation of the lifting device 5, the fixed cover 6 and the movable cover 2 to avoid backflow and ensure reliable cooling of the server.

[0043] Specifically, the fixed cover 6 is arranged at the top of the machine box 3, and the fixed cover 6 comprises a body 62 and a through portion 61 arranged on the body 62. The through portion 61 is used for the lifting end to pass through and can maintain the sealing between the backflow gap and the inner cavity of the machine box 3 to avoid air leakage and ensure that the cooling air flow reliably enters the rear window area 02 from the front window area 01 for cooling, thereby ensuring the cooling effect.

[0044] The movable cover 2 is rotationally connected to the fixed cover 6 or the machine box 3, so that the movable cover 2 can rotate relative to the fixed cover 6. Specifically, when the machine box 3 has a space for arrangement, the movable cover 2 is rotationally connected to the machine box 3, specifically to the side wall of the machine box 3. The side wall of the machine box 3 specifically refers to the left and right side walls as shown in Figure 1 . The left and right side walls provide positions for the two ends of the movable cover 2 to rotationally connect. When the machine box 3 is not convenient to arrange, the movable cover 2 can be directly rotationally connected to the fixed cover 6, and the side wall of the fixed cover 6 provides a position for the movable cover 2 to rotationally connect.

[0045] As shown in Figure 2 , Figure 3As shown, the movable cover 2 is specifically located on the fixed cover 6, and during the rotation of the movable cover 2, the fixed cover 6 can always keep the sealing of the backflow gap 4 and the inner cavity of the case 3, so as to avoid the hot air flow into the case 3 and also avoid the cooling air flow in the front window area 01 of the case 3 from leaking, thereby ensuring the cooling effect of the server.

[0046] The lifting device 5 is arranged in the front window area 01 of the case 3, and by arranging the lifting device 5 in the front window area 01 of the case 3, the hot air flow entering the front window area 01 through the backflow gap 4 can be blocked, and the hot air backflow can be blocked, thereby ensuring the reliable heat dissipation effect of the server.

[0047] Specifically, the front window area 01 of the case 3 is relative to the rear window area 02, the front window area 01 is the entrance of the cooling air flow, the rear window area 02 is the discharge end of the hot air flow after heat exchange, and the direction from the front window area 01 to the rear window area 02 corresponds to the cooling direction. The backflow direction is the direction of the hot air flow after heat exchange from the rear window area 02 to the front window area 01 through the backflow gap 4.

[0048] The lifting end of the lifting device 5 can move to pass through the penetrating portion 61 and extend out of or retract into the inner cavity of the case 3. When the lifting end extends out of the inner cavity of the case 3, the lifting end can drive the movable cover 2 to rotate to block the backflow gap 4, and during this process, the penetrating portion 61 can keep the sealing between the backflow gap 4 and the inner cavity of the case 3, so as to avoid the hot air flow into the case 3 and also avoid the cooling air flow in the front window area 01 of the case 3 from entering the backflow gap 4, thereby ensuring the reliable heat dissipation effect of the server.

[0049] The part of the lifting end extending out of the penetrating portion 61 can abut against the movable cover 2, so as to enable the movable cover 2 to rotate; or the part of the lifting end extending out of the penetrating portion 61 can be connected to the movable cover 2, so as to drive the movable cover 2 to rotate when the lifting end moves.

[0050] When the lifting end passes through the penetrating portion 61 and retracts into the inner cavity of the case 3, it corresponds to the case that the backflow gap 4 does not need to be blocked, the movable cover 2 rotates to a horizontal state and is attached to the fixed cover 6, and in this case, the penetrating portion 61 can still keep the sealing between the backflow gap 4 and the inner cavity of the case 3, so that the cooling air flow in the inner cavity of the case 3 cannot enter the backflow gap 4, thereby ensuring the reliable cooling effect.

[0051] In this embodiment, the movement of the lifting end of the lifting device 5 can be controlled automatically, manually or automatically and manually, and the specific control mode is determined according to the actual application scene. If it is not convenient to set a power mechanism, only manual control can be considered.

[0052] In the embodiment, the movable cover 2 can be rotated to block the backflow gap 4 by moving the lifting end of the lifting device 5 arranged in the front window area 01 of the cabinet 3, so as to avoid the damage of the hot air backflow to the server; the sealing between the backflow gap 4 and the inner cavity of the cabinet 3 can be maintained through the penetrating part 61, so as to avoid the air leakage, avoid the mixing of the cooling air flow and the backflow hot air flow, avoid the cooling air flow entering the backflow gap 4, and ensure the reliable cooling operation of the server.

[0053] Based on the above embodiment, please refer to Figure 3 、 Figure 4 The penetrating part 61 includes a penetrating hole 611 and elastic sheets 612, the elastic sheets 612 are arranged in close connection with the penetrating hole 611, and the lifting end can pass through the elastic sheets 612.

[0054] The elastic sheets 612 can be rubber sheets, silica gel sheets or the like, and have good elastic force. In the initial state, the elastic sheets 612 are arranged in close connection to maintain the sealing effect; when the lifting end passes through the elastic sheets 612, the elastic sheets 612 are extruded, and the elastic sheets 612 can be reliably attached to the outer periphery of the lifting end in the extruded state, so as to avoid air leakage and ensure the reliable cooling operation of the server.

[0055] The elastic sheets 612 can be formed by cutting a same elastic structure, and the position of the cutting line is the part through which the lifting end passes. In this case, the same elastic structure can be installed in the penetrating hole 611 first, and then cut, so as to facilitate the installation.

[0056] The elastic sheets 612 can also be a plurality of relatively independent elastic sheets 612, and each elastic sheet 612 is installed at the corresponding position of the penetrating hole 611. In this case, in order to ensure the reliable installation of each elastic sheet 612, a guide part or a positioning part can be arranged on the penetrating hole 611, so as to ensure that the elastic sheets 612 can be reliably sealed with the penetrating hole 611 after installation, avoid air leakage, avoid the mixing of hot and cold air, and ensure the reliable cooling operation of the server.

[0057] In a specific embodiment, the elastic sheets 612 are located on the side surface of the fixed cover 6 close to the inner cavity of the cabinet 3, and the side surface is Figure 4The lower surface can be defined as the lower surface, and the elastic sheet 612 can be attached to the lower surface, without occupying the space outside the case 3, without interfering with the rotation between the movable cover 2 and the fixed cover 6, ensuring reliable rotation of the movable cover 2 to seal the backflow gap 4, and facilitating reliable installation of the elastic sheet 612 to ensure the reliability of the lifting end passing through the plurality of elastic sheets 612.

[0058] In the embodiment, the plurality of elastic sheets 612 are attached, and the size and number of the elastic sheets 612 are determined according to the actual lifting end passing requirement, to ensure that the lifting end passing through the plurality of elastic sheets 612 can pass through the elastic force of the elastic sheet 612 to ensure reliable sealing, avoid air leakage, and ensure reliable and effective heat dissipation of the server.

[0059] In one specific embodiment, the surface of the fixed cover 6 facing the inner cavity of the case 3 is provided with a plurality of grooves for installing the elastic sheet 612, and the edge of the elastic sheet 612 is attached to the groove to realize fixation and limiting. The plurality of elastic sheets 612 can form a sealing area in the through hole 611 to ensure reliable sealing and avoid air leakage.

[0060] Based on any of the above embodiments, please refer to Figure 7 , the lifting device 5 includes a driving assembly 51 and a connecting rod assembly 52, the first end of the connecting rod assembly 52 is connected to the driving assembly 51, and the second end of the connecting rod assembly 52 is connected to the movable cover 2. The driving assembly 51 can realize the rotation of the connecting rod assembly 52, so that the second end of the connecting rod assembly 52 can be extended from the case 3 to the through part 61 or extended into the case 3 from the through part 61.

[0061] In the embodiment, the lifting device 5 specifically includes a driving assembly 51 and a connecting rod assembly 52, the connecting rod assembly 52 includes a plurality of connecting rods, which are connected to the first end of the driving assembly 51 to drive the connecting rod assembly 52 to rotate. The rotation of the connecting rod assembly 52 can make its second end extend from the case 3 to the through part 61 or extend into the case 3 from the through part 61. The second end of the connecting rod assembly 52 is connected to the movable cover 2, and the movable cover 2 can also rotate during the rotation of the connecting rod assembly 52 to seal or open the backflow gap 4.

[0062] The connection between the second end of the connecting rod assembly 52 and the movable cover 2 is detachable, such as by means of fasteners, such as fastening screws, etc. If a fault occurs, it can be individually disassembled and repaired.

[0063] Please refer to Figure 2 , Figure 7 , Figure 8In the state that the movable cover 2 is lifted to block the backflow gap 4, the second end of the connecting rod assembly 52 extends out of the penetrating portion 61 and is connected to the movable cover 2, and the second end of the connecting rod assembly 52 is located at the part of the penetrating portion 61 and is attached to the elastic sheet 612, so as to avoid the air leakage, avoid the mixing of cold air and hot air, and ensure the reliable heat dissipation of the server; when the movable cover 2 falls back and opens the backflow gap 4, the second end of the connecting rod assembly 52 is at least partially retracted into the cabinet 3 through the penetrating portion 61, and the movable cover 2 is attached to the fixed cover 6, which, in combination with the sealing of the body 62 of the fixed cover 6 and the penetrating portion 61 relative to the inner cavity of the cabinet 3, can reliably avoid air leakage and ensure the reliable heat dissipation of the server.

[0064] In the embodiment, the driving assembly 51 can specifically realize the rotation of the connecting rod assembly 52, which can be a driving motor 511 or a driving hand wheel in the form of a hand wheel.

[0065] On the basis of any of the above embodiments, please refer to Figure 7 , Figure 8 The second end of the connecting rod assembly 52 is connected to the movable cover 2 through the guide 529, and the second end of the connecting rod assembly 52 and the guide 529 can move into or out of the penetrating portion 61. As Figure 8 indicated, the guide 529 is specifically detachably connected to the movable cover 2, for example, by means of fastening screws.

[0066] In the process of rotating the movable cover 2, the guide 529 extends into the penetrating portion 61, and the movable cover 2 covers the fixed cover 6, corresponding to the falling of the movable cover 2 to open the backflow gap 4; the guide 529 extends out of the penetrating portion 61, and the second end of the connecting rod assembly 52 extends out of the penetrating portion 61, corresponding to the movable cover 2 being pushed to rotate to the lifted state, and the movable cover 2 in the lifted state can block the backflow gap 4, avoiding the backflow of hot air in the rear window area 02 to the front window area 01, realizing the effect of preventing backflow, and ensuring the reliable heat dissipation effect of the server.

[0067] The guide 529 is provided with a sliding groove 5291, and the sliding groove 5291 has a low position and a high position. The driving assembly 51 can drive the second end of the connecting rod assembly 52 to slide to the low position or the high position, so as to realize the rotation of the movable cover 2 to block or open the backflow gap 4. The sliding groove 5291 is specifically a groove body arranged obliquely, and the high and low positions are defined in the height direction of the entire device. Specifically, the height of the high position is higher than that of the low position. In the high position state, the movable cover 2 is lifted to block the backflow gap 4, and in the low position state, the movable cover 2 is lowered to open the backflow gap 4.

[0068] As Figure 7As shown, the driving assembly 51 can drive the connecting rod assembly 52 to rotate, so that the second end of the connecting rod assembly 52 slides between the low position and the high position, so as to realize the lifting or lowering of the guide 529 and the movable cover 2 as a whole. The second end of the connecting rod assembly 52 can be connected with the guide 529 through the roller 5223 and the sliding groove 5291. When the roller 5223 slides from the low position to the high position, the guide 529 and the movable cover 2 are lifted, and the part of the connecting rod assembly 52 located in the penetrating portion 61 can be connected with the elastic sheet 612 to ensure the sealing effect. When the roller 5223 slides from the high position to the low position, the guide 529 and the movable cover 2 are lowered, and the second end of the connecting rod assembly 52 and the guide 529 move into the penetrating portion 61 and partially extend into the case 3. The movable cover 2 is lowered to be attached to the fixed cover 6. In this case, the movable cover 2 and the fixed cover 6 are attached, and the fixed cover 6 and the case 3 are tightly connected, which are used to ensure the sealing effect.

[0069] In the embodiment, through the cooperation of the sliding groove 5291 and the guide 529, the rotation of the connecting rod assembly 52 driven by the guide 529 to rotate the movable cover 2 can be guided, so that the movable cover 2 can be reliably lifted or lowered, the backflow gap 4 can be reliably sealed or opened, and the reliability of the operation is ensured.

[0070] In the embodiment, it should be noted that the two sides of the roller 5223 of the second end of the connecting rod assembly 52 are limited to avoid the situation that the connecting rod assembly 52 slides out of the sliding groove 5291 from the two sides, so that the second end of the connecting rod assembly 52 can only slide in the direction of the sliding groove 5291, and the reliability of the operation is ensured.

[0071] On the basis of any of the above embodiments, please refer to Figure 7 The connecting rod assembly 52 comprises a first connecting rod 521, a second connecting rod 522, a fixed rail 524 and a sliding block 523. The first end of the first connecting rod 521 is connected with the fixed rail 524 through the sliding block 523, and the second end of the first connecting rod 521 is hinged with the second connecting rod 522. The lifting end of the lifting device 5, i.e. the guide 529 and the corresponding end of the second connecting rod 522, is fixed to the inner side wall of the case 3 through the through hole 31 provided on the inner side wall of the case 3 and the fastener. The fixed rail 524 is arranged in the case 3, and the fastening between the fixed rail 524 and the case 3 can be completed from the inner side or the outer side of the case 3, which is not limited.

[0072] The first end of the first connecting rod 521 is hinged with the sliding block 523 through a first rotating shaft 526, and the second end of the first connecting rod 521 is hinged with the second connecting rod 522 through a second rotating shaft 527. The first rotating shaft 526 can be fixed to the sliding block 523, and the second rotating shaft 527 can be directly fixed to the hinged part of the first connecting rod 521 and the second connecting rod 522.

[0073] The first end of the second connecting rod 522 is hinged to the fixed rail 524 via the third rotating shaft 528, and the second end of the second connecting rod 522 is slidably connected to the sliding groove 5291. The driving assembly 51 can drive the slider 523 to slide along the fixed rail 524, so that the first connecting rod 521 and the second connecting rod 522 rotate to drive the movable cover 2 to rotate. Figure 5 , Figure 7 As shown, the slider 523 can move along the length direction of the fixed rail 524, which corresponds to the direction defined by the front window area 01 and the rear window area 02.

[0074] like Figure 8 As shown, the second connecting rod 522 includes a first part 5221 and a second part 5222. The first part 5221 is bent relative to the second part 5222, and the first part 5221 and the first connecting rod 521 are hinged. The second part 5222 extends out of the through part 61 and its end is slidably connected to the sliding groove 5291 via a roller 5223. Specifically, during operation, the sliding of the slider 523 along the length direction of the fixed rail 524 enables the first connecting rod 521 and the second connecting rod 522 to rotate, and enables the end of the second part 5222 of the second connecting rod 522 to slide between a low position and a high position, so that the movable cover 2 can be rotated through the guide member 529, realizing the raising or lowering of the movable cover 2 relative to the fixed cover 6, correspondingly achieving the effect of sealing or opening the backflow gap 4.

[0075] In this application, such as Figure 8 As shown, when the movable cover 2 is in the raised state, the second part 5222 of the second link 522, which extends into the through hole 611, and the elastic piece 612 can maintain a reliable fit. The second part 5222 of the second link 522, which extends out of the through hole 611, can cooperate with the sliding groove 5291 to realize the rotation of the movable cover 2 relative to the fixed cover 6.

[0076] In this embodiment, the components that enable the slider 523 to slide relative to the fixed rail 524 include, for example, a linear module, an electric cylinder, or a manual push rod.

[0077] If the electric cylinder is connected to the slider 523 via its drive end, the slider 523 can move bidirectionally on the fixed rail 524 when the electric cylinder is extended or retracted.

[0078] If the manual push rod is directly connected to the slider 523, the slider 523 can be moved bidirectionally on the fixed rail 524 by manual force.

[0079] Based on any of the above embodiments, please refer to Figure 8The driving assembly 51 comprises a motor 511 and an output gear 512. The output end 513 of the motor 511 is connected to the output gear 512. The outer periphery of the output gear 512 is meshed with the meshing part 5231 of the sliding block 523. The motor 511 can drive the output gear 512 to rotate bidirectionally, so as to realize the bidirectional sliding of the sliding block 523 on the fixed rail 524.

[0080] In the embodiment, the output end 513 of the motor 511 is connected to the output gear 512. The motor 511 can drive the output gear 512 to rotate by forward and reverse rotation, and further form a gear and rack structure through the meshing relationship between the output gear 512 and the meshing part 5231 of the sliding block 523, so as to realize the movement of the sliding block 523 relative to the fixed rail 524.

[0081] For example, the forward rotation of the motor 511 drives the output gear 512 to rotate forward, so as to drive the sliding block 523 to move in the first direction of the fixed rail 524, enable the first connecting rod 521 and the second connecting rod 522 to rotate, and enable the second connecting rod 522 to slide to the high position, which corresponds to the lifting of the movable cover 2 relative to the fixed cover 6, so as to block the backflow gap 4 and avoid the backflow of hot air. The reverse rotation of the motor 511 drives the output gear 512 to rotate reversely, so as to drive the sliding block 523 to move in the second direction of the fixed rail 524, enable the first connecting rod 521 and the second connecting rod 522 to rotate, and enable the second connecting rod 522 to slide to the low position, which corresponds to the lowering of the movable cover 2 to be attached to the fixed cover 6, so as to open the backflow gap 4.

[0082] It should be noted that if two lifting devices 5 are arranged on the two side walls of the case 3, the two lifting devices 5 are arranged opposite to each other. The left motor 511 is forward rotated, and the right motor 511 is reversely rotated, so as to ensure that the two lifting devices 5 provide driving forces in the same direction, and reliably and stably drive the movable cover 2 from the two sides, so as to ensure the reliability and stability of the rotation of the movable cover 2.

[0083] On the basis of any of the above embodiments, please refer to Figure 6 , Figure 7 , Figure 8 The side of the sliding block 523 close to the driving assembly 51 extends to the front window area 01 of the case 3 to form a handle 525. The handle 525 can pull the sliding block 523 to slide on the fixed rail 524.

[0084] In actual application, if the driving assembly 51 fails, the handle 525 can be used to pull or push the sliding block 523 to move on the fixed rail 524, without affecting the normal use of the backflow prevention device, and ensuring the reliability of the backflow prevention device. The handle 525 can be partially extended into the case 3 or located in the case 3, which can be determined according to the actual space.

[0085] As Figure 8 illustrated, the slider 523 and the handle 525 are actually an integral component, and the handle 525 is arranged at the side of the slider 523, without affecting the sliding of the slider 523 relative to the fixed rail 524.

[0086] The handle 525 specifically includes a connecting portion 5251 and a gripping portion 5252, the connecting portion 5251 is connected to the slider 523, and the connecting portion 5251 and the slider 523 are both in sliding connection with the fixed rail 524, which can ensure the reliable guidance of the movement of the slider 523 when manually driven or driven by the motor 511. As Figure 8 illustrated, it ensures that the movement of the slider 523 is converted into the rotation of the first connecting rod 521 and the second connecting rod 522, and the reliability of the rotation of the movable cover 2 is realized through the second connecting rod 522, which ensures the reliable lifting and lowering of the movable cover 2.

[0087] The gripping portion 5252 is specifically bent relative to the connecting portion 5251, and part of the gripping portion 5252 can be provided with anti-slip protrusions or pull ring type parts that are convenient to grip, which can facilitate the operation of the operator.

[0088] In the embodiment, the side of the slider 523 away from the front window area 01 can be provided with an elastic member, which is connected to the slider 523 and the inner wall of the rear window area 02 of the cabinet 3. When the slider 523 is pulled along the first direction by the gripping portion 5252, the elastic member is stretched, and after sliding in place, the gripping portion 5252 is fixed relative to the cabinet 3, and the movable cover 2 is rotated to the lifted state to realize the blocking of the backflow gap 4; when it is necessary to open the backflow gap 4, the fixing of the gripping portion 5252 relative to the cabinet 3 is released, and loosening the gripping portion 5252 can make the slider 523 slide along the second direction of the fixed rail 524, and the movable cover 2 can be lowered to be attached to the fixed cover 6 under the action of the elastic force, so as to complete the manual lifting and lowering of the movable cover 2 in a time-saving and labor-saving manner, and improve the work efficiency.

[0089] On the basis of any of the above embodiments, please refer to Figure 8 , Figure 9 , further comprising a control panel 7 connected to the cabinet 3 through a fixing stud 32, and a detection element 8 arranged at the side of the movable cover 2 away from the fixed cover 6, the detection element 8 is used to detect the position information of the movable cover 2 and / or to contact the cabinet 3 at the end of the blocking path of the movable cover 2 to form detection information.

[0090] In one embodiment, the detection element 8 is used to contact the chassis 3 at the end of the sealing path of the movable cover 2 to form detection information. The specific sealing path refers to the rotation path of the movable cover 2 rotating to seal the backflow gap 4. If multiple chassis 3 are arranged in an up-down manner, the chassis 3 contacted by the corresponding movable cover 2 on the lower chassis 3 and the chassis 3 at the end of the sealing path are both the chassis 3 at the upper position. After the detection element 8 on the lower chassis 3 contacts the bottom of the chassis 3 at the upper position, a detection signal is formed and sent to the control panel 7.

[0091] In another embodiment, the detection element 8 detects the position information of the movable cover 2. The position information can be obtained through feedback such as rotation angle and height. The obtained detection information is sent to the control panel 7. In this way, feedback information can be obtained before the detection element 8 contacts the chassis 3, avoiding the collision between the detection element 8 and the chassis 3 due to instruction delay. The collision between the detection element 8 and the chassis 3 can be reliably avoided, that is, the collision of the movable cover 2 can be avoided, thereby ensuring the service life of the movable cover 2.

[0092] The control panel 7 controls the start and stop of the driving assembly 51 according to the feedback information of the detection element 8, so as to limit the rotation range of the movable cover 2 and avoid damage caused by the collision between the movable cover 2 and the chassis 3, thereby ensuring the reliable service life of the movable cover 2. For example, during the process of lifting the movable cover 2 to seal the backflow gap 4, if the control panel 7 receives the detection information sent by the detection element 8, the driving assembly 51 is stopped, and the movable cover 2 no longer rotates, thereby avoiding the extrusion deformation.

[0093] As shown in Figure 7 , Figure 8 , the detection element 8 is located at the edge position of the movable cover 2. The specific edge position is opposite to the edge of the movable cover 2 rotationally connected to the fixed cover 6. In the lifted state of the movable cover 2, the detection element 8 contacts the bottom of the upper chassis 3 first, thereby avoiding the extrusion deformation caused by the over-limit rotation of the movable cover 2, and ensuring the service life of the movable cover 2.

[0094] In addition, at least one end of the fixed rail 524 is provided with a limiting protrusion 5241 for limiting the sliding of the sliding block 523 to limit the rotation range of the movable cover 2. At least one end of the fixed rail 524 in the length direction is provided with a limiting protrusion 5241. The specific limiting protrusion 5241 is used to limit the sliding distance of the sliding block 523 relative to the fixed rail 524, so as to limit the rotation of the movable cover 2, thereby ensuring the reliable safety of the rotation of the movable cover 2 and the service life of the movable cover 2.

[0095] In this embodiment, the rotation range of the movable cover 2 is limited by the cooperation of the detection element 8 and the limiting protrusion 5241, so as to avoid damage of the movable cover 2 and ensure the reliable service life of the movable cover 2.

[0096] Based on any of the above embodiments, please refer to Figure 4 , the fixed cover 6 is provided with a groove 64, a first edge 03 of the groove 64 is provided with a plurality of rotating shafts 63, and the rotating shafts 63 are rotationally connected with the movable cover 2. The specific position and number of the rotating shafts 63 can be determined according to actual conditions, for example, the rotating shafts 63 are arranged in two sections, and are specifically arranged at the groove wall position of the groove 64 of the fixed cover 6, without affecting the sealing of the fixed cover 6 relative to the inner cavity of the case 3. One side of the movable cover 2 is rotationally connected with the rotating shaft 63, and the other side is provided with a detection element 8. When the movable cover 2 is rotated to be lifted, the detection element 8 can feed back detection information to the control panel 7, so as to avoid damage of the movable cover 2 due to excessive rotation.

[0097] Please refer to Figure 2 , Figure 4 , the movable cover 2 is rotated to extend into the groove 64 or rotated to move out of the groove 64. When the movable cover 2 moves into the groove 64, the upper surface of the movable cover 2 is lower than or equal to the plane where the top of the groove 64 is located. The movable cover 2 does not occupy the height space of the case 3, and directly uses the groove 64 of the fixed cover 6 to provide a placement space. When the movable cover 2 is located in the groove 64, it does not interfere with the case 3 located at the upper position thereof.

[0098] At least one of the two second edges 04 of the groove 64 is provided with a penetrating portion 61, and each penetrating portion 61 corresponds to a group of lifting devices 5. The second edge 04 is arranged perpendicularly to the first edge 03, and the second edge 04 is arranged parallel to the backflow direction of the backflow gap 4, as indicated by the arrow in Figure 1 . If both of the second edges 04 are provided with the penetrating portion 61, two groups of lifting devices are correspondingly arranged on the backflow prevention device, so as to reliably and stably drive the movable cover 2 to rotate from the two side positions of the movable cover 2.

[0099] The control panel 7 is provided with a temperature sensor 76, an external data interface 74 and a controller 77. The external data interface 74 is used for signal connection to the cooling system to obtain a set temperature, the temperature sensor 76 is used for detecting the actual temperature corresponding to the front window area 01 of the case 3, and the controller 77 controls the rotation of the movable cover 2 according to the difference between the set temperature and the actual temperature. Whether the backflow condition occurs is determined by the temperature difference. If the backflow condition occurs, the controller 77 controls the driving assembly 51, and controls the movable cover 2 to rotate to the lifted state through the driving assembly 51, so as to block the backflow gap 4 and ensure reliable and effective heat dissipation of the server.

[0100] The control board 7 is provided with a plurality of power supply interfaces and a plurality of signal interfaces, which are specifically determined according to the number of the lifting devices 5. For example, the control board 7 is provided with a first power supply interface 71, a second power supply interface 75, a first signal interface 72 and a second signal interface 73. The first power supply interface 71 and the second power supply interface 75 are respectively electrically connected to the power supply interfaces 5111 of the driving assemblies 51 corresponding to the two groups of lifting devices 5 in the cabinet 3. The first signal interface 72 and the second signal interface 73 are respectively signal connected to the communication interfaces 5112 of the driving assemblies 51 corresponding to the two groups of lifting devices 5. The first power supply interface 71 and the second power supply interface 75 are specifically used for providing reliable power supply. The first signal interface 72 and the second signal interface 73 are used for realizing the communication interconnection between the controller 77 and the driving assemblies 51. The driving assemblies 51 can drive the movable cover 2 to rotate to block or open the backflow gap 4.

[0101] In addition to the above-mentioned server backflow prevention device, the application also provides a backflow prevention method, please refer to Figure 10 The backflow prevention method comprises the following steps: obtaining a first air pressure value P1 of a cooling system and a second air pressure value P2 of a rear window area 02 of the cabinet 3, and determining a difference value ΔP=P1-P2 of the first air pressure value P1 and the second air pressure value P2.

[0102] When ΔP≤0, a set temperature T1 of the cooling system and an actual temperature T2 of a front window area 01 of the cabinet 3 are obtained, and a difference value ΔT=T1-T2 of the set temperature T1 and the actual temperature T2 is determined. When ΔT≤5℃, a first control instruction is formed, which needs to be sent to the lifting device 5 to drive the lifting device 5 to rotate the movable cover 2 to block the backflow gap 4.

[0103] When ΔP>0, a second control instruction is formed, which needs to be sent to the lifting device 5 to drive the lifting device 5 to rotate the movable cover 2 to open the backflow gap 4.

[0104] In this embodiment, the first air pressure value P1 of the cooling system and the second air pressure value P2 of the corresponding hot channel of the rear window area 02 of the cabinet 3 are detected first to determine whether the cooling system is working normally. If ΔP>0 occurs, it indicates that the cooling system is working normally and there is no backflow phenomenon, and the movable cover 2 does not need to block the backflow gap 4. If ΔP≤0 occurs, it needs to be further combined with the difference between the set temperature T1 of the cooling system and the actual temperature T2 of the front window area 01 of the cabinet 3 to determine whether it is caused by the air pressure difference of the backflow phenomenon. Specifically, when T≤5℃, it is determined that the backflow phenomenon occurs, and the movable cover 2 needs to be controlled to rotate to block the backflow gap 4.

[0105] When the movable cover 2 blocks the backflow gap 4, the first air pressure value P1 of the cooling system and the second air pressure value P2 of the corresponding heat channel of the rear window area 02 of the cabinet 3 are kept to be detected. When P1-P2>0, it is confirmed that there is no backflow phenomenon. Then the movable cover 2 is retracted into the groove 64 of the fixed cover 6, and the backflow gap 4 is opened, thereby avoiding unnecessary energy consumption.

[0106] For example, the first control instruction is specifically that two groups of lifting devices 5 in the cabinet 3 work together to push the movable cover 2 to rotate relative to the fixed cover 6 until the movable cover 2 stops rotating by contacting the bottom of the upper cabinet 3. The second control instruction is specifically that two groups of lifting devices 5 in the cabinet 3 work together to push the movable cover 2 to rotate relative to the fixed cover 6 until the movable cover 2 falls into the groove 64 of the fixed cover 6.

[0107] The server backflow prevention device and the backflow prevention method provided by the present application are described in detail above. In this paper, specific examples are applied to explain the principles and implementation modes of the present application. The above examples are only used to help understand the method and its core idea. It should be pointed out that for ordinary skilled persons in the technical field, some improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A server anti-backwash device, characterized by, The utility model relates to a cabinet (1) is provided with, the cabinet (1) is provided with at least two machine boxes (3), and the adjacent two machine boxes (3) form the backflow gap (4) between, the fixed cover (6) is provided with in the top of machine box (3), the fixed cover (6) includes the body (62), is provided with the through -going part (61) of body (62), the through -going part (61) is used for the lifting end passes through and can keep the seal between the backflow gap (4) and the inner chamber of machine box (3), the movable cover (2) is rotatably connected on the fixed cover (6) or machine box (3), the lifting device (5) is provided with in the front window area (01) of machine box (3) and includes the lifting end, the lifting end can move through the through -going part (61) to from the inner chamber of machine box (3) stretch out or retract, when the lifting end passes through the through -going part (61) and stretches out in machine box (3), the lifting end can drive the movable cover (2) rotates to block the backflow gap (4), the through -going part (61) includes the through -going hole (611), the elastic sheet (612), a plurality of elastic sheet (612) is attached and is closedly connected to the through -going hole (611), the lifting end can be worn between a plurality of elastic sheet (612), the part of lifting end in the through -going hole (611) and the elastic sheet (612) attached. The lifting device (5) includes a drive assembly (51) and a link assembly (52), the first end of the link assembly (52) is connected to the drive assembly (51), the second end of the link assembly (52) is connected to the movable cover (2), and the drive assembly (51) can rotate the link assembly (52) to make the second end of the link assembly (52) stretch out of the through -going part (61) or stretch into the machine box (3) from the through -going part (61). The second end of the link assembly (52) is connected to the movable cover (2) through a guide (529), and the second end of the link assembly (52) and the guide (529) can move into or out of the through -going part (61). The guide (529) is provided with a sliding groove (5291), the sliding groove (5291) has a low position and a high position, and the drive assembly (51) can drive the second end of the link assembly (52) to slide to the low position or the high position to rotate the movable cover (2) to block or open the backflow gap (4). The link assembly (52) includes a first link (521), a second link (522), a fixed rail (524), and a sliding block (523), the first end of the first link (521) is slidingly connected to the fixed rail (524) through the sliding block (523), and the second end of the first link (521) is hingedly connected to the second link (522). ​ ​ ​ 2. The server anti-reflux device of claim 1, wherein, ​ 3. The server anti-reflux device of claim 2, wherein, ​ ​ 4. The server anti-reflux device of claim 3, wherein, ​ The first end of the second connecting rod (522) is hingedly connected with the fixed rail (524), and the second end of the second connecting rod (522) is slidingly connected with the sliding groove (5291), and the driving assembly (51) can drive the sliding block (523) to slide along the fixed rail (524) so that the first connecting rod (521) and the second connecting rod (522) rotate to drive the movable cover (2) to rotate.

5. The server anti-reflux device of claim 4, wherein, The driving assembly (51) comprises a motor (511) and an output gear (512), the output end (513) of the motor (511) is connected with the output gear (512), the outer periphery of the output gear (512) is in meshing connection with the meshing part (5231) of the sliding block (523), and the motor (511) can drive the output gear (512) to rotate bidirectionally so as to realize the bidirectional sliding of the sliding block (523) on the fixed rail (524).

6. The server anti-reflux device of claim 5, wherein, The side of the sliding block (523) close to the driving assembly (51) extends towards the front window area (01) of the cabinet (3) to form a handle (525), and the handle (525) can pull the sliding block (523) to slide on the fixed rail (524).

7. The server anti-reflux device of claim 6, wherein, Further comprising a control panel (7) arranged in the cabinet (3), and a detection element (8) arranged on the side of the movable cover (2) away from the fixed cover (6), the detection element (8) is used for detecting the position information of the movable cover (2) and / or for contacting the cabinet (3) at the end of the blocking path of the movable cover (2) to form detection information, and the control panel (7) controls the start and stop of the driving assembly (51) according to the feedback information of the detection element (8) to limit the rotation range of the movable cover (2); At least one end of the fixed rail (524) is provided with a limiting protrusion (5241), and the limiting protrusion (5241) is used for limiting the rotation range of the movable cover (2) by limiting the sliding of the sliding block (523).

8. The server anti-reflux device of claim 7, wherein, The fixed cover (6) is provided with a groove (64), a first edge (03) of the groove (64) is provided with a plurality of rotating shafts (63), one side of the movable cover (2) is rotatably connected with the rotating shafts (63), and the other side of the movable cover (2) is provided with a plurality of detection elements (8). The movable cover (2) rotates to extend into the groove (64) or rotates to move out of the groove (64), and when the movable cover (2) moves into the groove (64), the upper surface of the movable cover (2) is lower than or equal to the plane where the top of the groove (64) is located. At least one of the two second edges (04) of the groove (64) is provided with the penetrating part (61), and each penetrating part (61) corresponds to a group of lifting devices (5); the second edge (04) is arranged perpendicularly to the first edge (03), and the second edge (04) is arranged parallel to the backflow direction of the backflow gap (4). The control panel (7) is provided with a temperature sensor (76), an external data interface (74) and a controller (77), the external data interface (74) is used for signal connection to a cooling system to obtain a set temperature, the temperature sensor (76) is used for detecting an actual temperature corresponding to the front window area (01) of the cabinet (3), and the controller (77) controls rotation of the movable cover (2) according to a difference between the set temperature and the actual temperature.

9. A backflow prevention method characterized by comprising: The anti-backflow method is applied to the server anti-backflow device of any one of claims 1 to 8, and the anti-backflow method comprises: obtaining a first air pressure value P1 of a cooling system and a second air pressure value P2 of a rear window area (02) of the cabinet (3), and determining a difference ΔP = P1-P2 between the first air pressure value P1 and the second air pressure value P2; when ΔP≤0, obtaining a set temperature T1 of the cooling system and an actual temperature T2 of the front window area (01) of the cabinet (3), determining a difference ΔT = T1-T2 between the set temperature T1 and the actual temperature T2, and when ΔT≤5℃, forming a first control instruction for controlling the lifting device (5) to work, so as to control the lifting device (5) to drive the movable cover (2) to rotate to block the backflow gap (4); when ΔP>0, forming a second control instruction for controlling the lifting device (5) to work, so as to control the lifting device (5) to drive the movable cover (2) to rotate to open the backflow gap (4).

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